Maybe I'm right with: "Survably" correctly.
In the swimming pool I can open my eyes, though I find it abundantly unpleasant.
But when Diving course you have to remove the mask and open your eyes. Is that really possible so easily?
Sorry, is certainly no rocket research question ...
Actually M.E in salted water even easier: no chlorine and salt concentration is not so far away from the tear fluid.
is not a problem. Sea water is not bad. There is chlorine stupid for the eyes. Tear flu as well as sweat is also salty